#include<iostream>
#include<string>

using namespace std;

int main(){
	string s;
	cin >> s;
	int len = s.size();
	
	for(int i=0;i<len;i++){
		if(s[i] == 'z'){
			s[i] = 'a';
		}else if(s[i] == 'Z'){
			s[i] = 'A';
		}else if(s[i]>='A'&&s[i]<='Z'||s[i]>='a'&&s[i]<='z'){
			s[i]++;
		}
	}
	cout << s;
	
	return 0;
} 
